离子液体与芳香类高沸点有机物相平衡

CIESC Journal

离子液体与芳香类高沸点有机物相平衡

姜晓辉赵锁奇孙学文浮东宝

中国石油大学（北京）重质油加工国家重点实验室

出版日期:2007-04-05 发布日期:2007-04-05

Phase equilibrium of ionic liquids and high boiling point aromatic compounds

Online:2007-04-05 Published:2007-04-05

摘要/Abstract

摘要： 采用超临界CO2萃取方法得到了高纯度的离子液体[bmim]PF6、[bmim]BF4 和[bupy]BF4。用反相键合相高效液相色谱法（HPLC）测定了三种离子液体中萘、菲、联苯、二苯并噻吩（DBT）和二苯基二硫醚在280～340K的溶解度，分别用两参数和三参数的NRTL方程关联了测得的溶解度数据。溶解度计算值与实验值的相对平均偏差在3.86～9.94％之间。显然，可以用NRTL方程描述这些固体物质与离子液体的固液相平衡。同样条件下，测定了乙苯—[bmim]PF6、十二烷基苯—[bmim]PF6 液液相平衡数据。前者的规律也可以用NRTL方程描述，两相溶解度计算值与实验值的平均偏差分别是10.20、3.37％。

Abstract: Dialkylimidazolium ionic liquids (ILs) ［bmim］PF6, ［bmim］BF4, and alkylpyridine IL ［bupy］BF4 were obtained by super critical fluid(SCF) CO2 extraction. The solubilities of naphthalene, phenanthrene, diphenyl, DBT and diphenyldisulfide in ［bmim］PF6, ［bmim］BF4 and ［bupy］BF4,akylbenzene in ［bmim］PF6 and ［bmim］PF6 in akylbenzene were determined by high performance liquid chromatography (HPLC).Solubility experimental data of solid liquid equilibrium(SLE) were correlated by means of NRTL equation. The results indicate that NRTL is appropriate for the behaviour of these SLE and the average deviation is 3. 86%—9. 94%.

姜晓辉赵锁奇孙学文浮东宝. 离子液体与芳香类高沸点有机物相平衡 [J]. CIESC Journal.

. Phase equilibrium of ionic liquids and high boiling point aromatic compounds[J]. .